Three types of N? chloroacetyl substitutednitrogen? containing benzoheterocycles were introduced into pyrimidine by the formation of thioether.
三种n-氯乙酰取代的苯并含氮杂环化合物通过硫醚键的形成被导入嘧啶结构。
2
Novel thio-substituted, nitrogen-containing, heterocyclic phosphonate compounds, pharmaceutical compositions, and methods of treating abnormal calcium and phosphate metabolism.
新的硫取代含氮杂环膦酸化合物,药物组合物,和治疗钙与磷酸盐异常代谢的方法。
3
Beginning in June 2000, measurements of nitrogen dioxide were substituted into the air quality calculations in place of measurements of nitrogen oxides.